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Commit 24a13044 authored by Jens Freimann's avatar Jens Freimann Committed by Avi Kivity
Browse files

KVM: s390: ignore sigp stop overinitiative 



In __inject_sigp_stop() do nothing when the CPU is already in stopped
state.

Signed-off-by: default avatarJens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 151104a7

arch/s390/kvm/sigp.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -160,12 +160,15 @@ static int __inject_sigp_stop(struct kvm_s390_local_interrupt *li, int action) 
	inti->type = KVM_S390_SIGP_STOP;

	inti->type = KVM_S390_SIGP_STOP;





	spin_lock_bh(&li->lock);

	spin_lock_bh(&li->lock);

	if ((atomic_read(li->cpuflags) & CPUSTAT_STOPPED))

		goto out;

	list_add_tail(&inti->list, &li->list);

	list_add_tail(&inti->list, &li->list);

	atomic_set(&li->active, 1);

	atomic_set(&li->active, 1);

	atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);

	atomic_set_mask(CPUSTAT_STOP_INT, li->cpuflags);

	li->action_bits |= action;

	li->action_bits |= action;

	if (waitqueue_active(&li->wq))

	if (waitqueue_active(&li->wq))

		wake_up_interruptible(&li->wq);

		wake_up_interruptible(&li->wq);

out:

	spin_unlock_bh(&li->lock);

	spin_unlock_bh(&li->lock);





	return 0; /* order accepted */

	return 0; /* order accepted */